Lock



w. 1. AND 1. F. BECKER.

LOCK. v' n APPLICATION FILED DEC. Il, 1919.

1,364,024, Patented D60. 28, '1920.

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APPLICATION FILED Dsc. II, I9I9.

Patented Dee. 28,1920.

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WILLIAM J BECKER,y OIE DETROIT, ANI) JOHN F. BECKER, 0F LAURIUM,MICHIGAN.

LOCK.

Application led December 11, 1919.

To all w hom t 'may con com Be it known that we, WILLIAM J. BECKER,

a citizen of the United States, residing at Detroit, in the county ofWayne and State of Michigan, and JOHN F. BECKER, a citizen of the UnitedStates, residing at Laurium, in the county of Houghton and State ofMichigan, have invented certain new and useful Improvements in Locks;and we do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to locks, and more specifically to the class oflocks' generally known as morti'se locks.

One object of the invention is -to generally improve upon locks of thischaracter by providing an exceedingly strong, durable and eflicientstructure that may be very quickly and easily installed in a cylindricalbore or mortisinthaedge of a door, and which may be manufactured at acomparatively low cost.

A further object is to provide a lock of this character in which aspring that actuates the latch or bolt also exerts a pressure whichfrictionally holds the pawl or keeper in both its operativeandinoperative positions.

Other objects and advantages may become apparent to persons who read thefollowing details of description in connection with the accompanyingdrawings in which Figure 1 is a view disclosing "one half or a sectionof the casing and the internal mechanism fitted therein.

Fig. 2 is a 'longitudinalsectional view through the two casing sections,the section being taken along the line 2 2 of Fig. 3.

Fig. 3 is a view partly in elevation and partly in vertical section, thetumbler and locking pawl being shown in their effective positions forlocking the bolt against rotation.

F ig. 4 .is a transverse vertical section along the line 4 4 of Fig. '2.

Fig. 5 is a transverse vertical section along the line 5 5 ofFig. 2.l

Fig. 6 is a transverse vertical section along the linel 6 6 of Fig. 2.

Fig. 7 is a perspectiveV view of the locking pawl detached.

1 L Fig. 8. isa perspective viewer the tum- Specication of LettersPatent.

Patented Dec. 28, 1920.

serial No. 344,037.

bler and the thereon.

Fig. 9 1s a perspective view of pawl actuating sleeve seated the pawlIactuating sleeve detached.

Referring to the drawings in detail, in which similar referencecharacters correspond with similar parts throughout the several views,the casing is composed of an upper section 1 and a lower section 2,although it should be understood that this lock is invertible andreversible and that the section 2 may become the upper section while thesection 1 becomes the lower section. These sections may be securedtogether by any appropriate means including a screw 3, and each sectionisprovided with a track or guideway in which a rack or boltactuating bar4'is slidable longitudinally. Each bar 4 is provided with a series vofapertures 5 in which the teeth of a Spur pinion,` 6 engage or mesh, andthe pinion 6 is l formed with a rectangular aperture 7 therethrough forreceiving the shank of a knob or handle whereby the pinion 6 is turned,it being shown in Fig. l that the pinion 6 is provided with trunnions 8which are journaled in bearings 9 formed in the upper and lower sectionsof the casing. The front end of each bar 4 is turned laterally toprovide a shoulder or abutment 10 which engages with a similar shoulderor abutment of a bolt 11, the latter including the usual latchprojection which extends through the face plate of the lock and engageswith an extraneous keeper (not shown). Moreover, the bolt 11 isbifurcated to receive a spring 12, a cavity 13 being provided forretaining one end of the spring in fixed relation with the bolt.l Theother end of the spring 12 bears against a retaining member which has aguiding pin 15 on one side, this guiding pin extending into vthe spring12 and keeping it substantially straight. The other side of the member14 is concaved and seated against the convexed surface ofa pawl ormember such as shown in Fig. 7, this member including a rocking shaft 16and an arm or radial projection 17, the latter being formed with a lug18 which is adapted to extend into a notch or recess 19 in the uppercasing 1. In passing into the recess 19 the lug 18 enters between a pairof shoulders 0r abutments 20 of one of the bars 4. The pawl is alsoprovided with-,a shoulder 21 which engages with the bolt 11 whenin theposition shown in Fig. 3. It will be seen therefore, that when the pawlis in this effective position, it not only prevents the bars 4 frombeing actuated, but also pre* vents the bolts 11 from being actuated byextraneous means.

In order that the pawl may be moved into this effective position andheld securely therein, a tumbler 22 is provided with trunnions 23 whichare journaled in the upper and lower sections of the casing, and asleeve 24; is rotatably seated on the tumbler and formed with a lateralextension or projection 25 which normally rests under the part.

17 of the pawl, as shown in Fig. 2. However, upon rotation of the sleeve24C into the position shown in Fig. 3, the pawl is moved into theeffective position shown in Fig. S and stands under the pawl to preventits disengagement from the latch 11 and from between the shoulders ofthe upper bar 4. It will be seen, therefore, that the strength of thelock does not depend upon the strength of the shaftV 16, for the casingat 19 adds its strength.

It should be understood that the tumbler 22 should be normally lockedand that a key may be inserted in the key-hole 26 for unlocking thetumbler and turning the same when unlocked. The details of constructionof the tumbler locking means are well known to the public, and thefollowing brief description thereof will suiiice. One or more plungersor catches 27 are spring pressed and normally held by their springs inlocking engagement with the tumbler, the latter being provided withapertures which communicate with the key-hole 26 so that the keyreleases the tumbler from its engagement with the catches 27.v IVhenthus released, the tumbler can be turned by turning the key in the wellknown manner, and the catches 27 slide upon the tumbler during itsrotary movement. The sleeve 24 is provided with a slot 2S which receivesone end of the middle plunger 27 and permits the sleeve to rotatewithout interfering with the middle plunger or being interfered with bythis plunger. It should be understood that the tumbler turns through anentire revolution in order to enable the key to be inserted andwithdrawn while in the same position, and that the sleeve 24 rotatesthrough only about 4:5 degrees, and therefore, the sleeve is providedwith lugs or abutments 29, and that the tumbler is provided with lugs orabutments 30. Therefore, after the tumbler has rotated to approximately45 degrees from the position shown in Figs. 2 andS, the lugs 30 pick upthe lugs 29 and effect the rotary movement of the sleeve 24 from theposition shown in Fig. 2 to that shown in Fig. 3.

Although we have described these embodiments of our invention veryspecifically, it is notmtended to limit this invention to these vwiththe bolt to preventits retraction and 'said hole, and a sleeve movablyseated on exact details of construction and arrangement, but changes maybe made within the scope of the inventive ideas as implied and claimed.

WV hat we claim as our invention is:

1. In a'lock, a bolt, a pair of separately movable bars engageable withsaid bolt and movable longitudinally to retract the bolt, a rotarymember engaged with said bars and operatable to move them longitudinallyin opposite directions, and means independent of said bolt to directlyengage with one of said bars to prevent this bar frombeing movedlongitudinally.

2. In a lock, a bolt, a. pair of fiat bars each having a series ofperforations in one end portion and a shoulder at its other end, a spurpinion having its teeth in mesh with the perforations of said bars andbeing operatable to move said bars simultaneously in oppositedirections, the shoulders of said bars being engageable with said boltto retract the latter, one of said bars being formed with spacedabutments, and means movable into the' space between said abut ments tolock said bar against longitudinal movement. Y

3. In a lock, a bolt, a bar engageable with l said bolt and movablelongitudinally to re- ,t tract the bolt and also being movable indeilpendently of the bolt, a pawl engageable also being engageable with saidbar to prei' vent its longitudinal movement, and meansv to actuate thepawl and hold it in its engagement with said bar and bolt.

4. In a lock, a bolt. Ya bar engageable with said bolt and movablelongitudinally to retract the bolt, a pawl. a casing in which the boltand bar are slidable and in which said pawl is pivoted, and means tomove said pawl into locking engagement with said bar and into a recessof said casing so Vthat the casing `cowacts with the pivot of said pawlto secure the saidbar in its inoperative relation.

5. In a lock. a bolt. mea-ns to retract the bolt, a pawl movable fromits ineffective position to its effective position for preventing thebolts retraction, a spring to move the bolt outward. means co-actingwith said spring to hold said pawl both in its eifective and ineffectivepositions. and meansmovable from its normal position to move said pawlto its effective position and hold it in said effective position, saidbolt being operatable by the retraction of said bolt to return thespringfcontrolled pawl to its ineifective position when the last saidmeans is restored to its normal position. f

6. In a lock, a bolt, means to retract said bolt, a pawl movable to aneffective position for preventing retraction of said bolt,` a normallylocked tumbler provided with a keyhole and adapted to be unlocked by akey in Y said tumbler and provided with a projection which is engageablewith said pawl to move it to its effective position, said tumbler beingprovided With an abutment engageable with said sleeve for causing saidprojection to actuate said pawl.

7. In a lock, a bolt, means to retract they bolt, a pawl movable to aneffective position for preventing retraction of the bolt, a tumbler, akey-controlled catch normally in locking engagement with the tumbler andmovable out of said engagement by means of a key insertible in thetumbler and effective to turn the tumbler, and a slotted sleeve rotaourhands.

WILLIAM J. BECKER. JOHN F. BECKER.

